Spinomenal
The studio behind Book of Lucky Jack: Ra's Treasure
See how the studio's model performs in the Book of Lucky Jack: Ra's Treasure RTP breakdown.
Company History
Spinomenal built Book of Lucky Jack: Ra's Treasure as the third chapter of its Lucky Jack series, moving the adventurer from Atlantis ruins and jungle tigers into an Egyptian tomb while keeping the Book-of expanding mechanic intact.
The studio runs on multi-market licensing and third-party RNG audits, and it's known for shipping titles with several operator-selectable RTP builds — which is exactly why this game's info panel deserves a look before you spin.
What They Do Best
Series Reskins
Spinomenal reworks its own frameworks across themes, and Book of Lucky Jack: Ra's Treasure is the Egyptian entry — the same expanding-symbol free spins wearing Pharaoh, Ra, Anubis, and Sphinx.
Buy-Feature Design
The studio leans on optional feature buys, and here the ~80-90x entry lets players skip the ~1-in-200 natural wait entirely.
Other Popular Spinomenal Games
| Game | RTP | Max Win |
|---|---|---|
| 4 Fairy Flowers | 96.00% | 3,000x |
| 1Reel Slots | 95.42% | 500x |
| Poseidon | 96.20% | 5,000x |
| Easter Mayhem | 96.20% | 2,000x |
| Whispers of Nyx | 96.22% | 15,000x |
| Wrath of Hephaestus | 95.78% | 3,000x |
Fairness & Licensing
Spinomenal certifies its RNG through independent labs, and the payout math is identical in demo and real money — just remember the operator picks which of the four RTP builds you actually get.
Why Book of Lucky Jack: Ra's Treasure?
If the Book-of format is your thing, Book of Lucky Jack: Ra's Treasure gives you the classic expanding-symbol free spins plus uncapped retriggers and a buy button — 96.14% on the default build, 5,000x if Pharaoh cooperates. Just confirm the RTP version first.